Device for tensioning crimped lace in the course of weaving



G. PERRET 1,860,591

DEVICE FOR TENSIONING CRIMPED LACE IN THE COURSE OF WEAVING May 31, 1932.

Filed Feb. 27, 1930 2 Sheets-Sheet l Gv FERRET May 31, 1932.

'DEVI CE FOR TENSIONING GRIP/[FED LACE IN THE COURSE OF WEAVING Filed Feb. 27, 1930 2 Sheets-Sheet 2 mm x3 8 .HWQW mm m M 8 WET? ' [2 we or:- fib Z0! 3] His 17/702729:-

Patented May 31, 1932 l waitresses 0:? Peers, FRANCE nnvicn msnssmamecm n Lies VIN 'rnnoonnsnjor WEAVINGt Application filedlbru aryfi'ti '193o,Se"ria1 No. 431, 797, i and inFrance March 2, 1929. 3

I The'presentinvention relates ito a device for constantly tensioning on the-"1001111306, tape, webbing, g'alloon or the like (hereinafter referred to as lace) of the kindthat is crimped or puckered ona'portion of'its width from one selv'age thereof, 7

The primary object of the invention is the provision of a *device readily "adaptable onlace weavingloom-s for frictionally acting on the crimped or puckered side of the lace being woven in such away as to acceleratethe' rate of feed of -saidcrimpedj side while holding' it well taut whereby'at each pick theshuttle can always traverse the whole lap of warp threads'substantially;atgrightangles thereto and the texture of the lace' is thus uniform throughout its'width; 1 v

A'further-obj ect'of the invention is the provision of a lace tensioning "device "'of simple' andcheap construction and operation-adapt ed for permitting the frictional accelerating action on the crimped side 'portionof the lace to be readily adjusted in a most preciseway depending on thethicknes's "and/or nature of theYlaceandtl1e' additional length of its crimped or puckered side p Qrtion withrespeet toitsplainor non-crimpe'd'side portion;

f Numerous-other objects and advantages of the invention'will be apparent as it-is better understood from the followingdescription which, taken in connection with the ac'coi'n panying drawin bodiment-the'reoff I Referring to the drawings? Figure 1 is a perspective view'oftl1e com- I plete 'tensioning {device aecording to the-{ in-- vention as secured against thef 'amework of the-"lace weaving 'l'oom',fthe line passing be-- i ,i tween the. rollers illustratingjn ajdiagraim av lnatic way the path followed by the lace; the rectilinear: arrows showing how-"the" ila ee is held taut bythe rollers before passing between them and floats in the criinped or puckered st ate after having passed between them.

Figure 2 is a fragmentary"perspctiveyieiv somewhat diagrammatic setting" forth in' "a still clearer, way the tensioning effectdfth devi euPOntlfelaceE v Figure 3' is a fragmentary plan view of an 7 edge 1 viewgs, discloses a preferred emindex op'erating knob-or handle associated withEtheroller-supporting frame for accurately adjusting the distance between said rollers. i 5

Figureis a diagrammatic elevational view I of anadjustable clutch gear, interposed between the usual actuating mechanism of the loom and the tensioning device-according to the invention. I V

- Figure 5: is a diagrammatic fragmentary of the clutch gear shown'in -Figure4."""- r Like references designate throughout'tlie several-mews. I

As'fillustrated, the tensioning device is v like parts adapted to be secured to the framework A of the lace weaving loon1,'-for example by means of screws (b passing through a base plate-1. Against the latter is adjustably secured, by means ofscrews 2, a fish plate3 formed with horizontal slots 3" through whichsaid screws positionjof sai-d fish plate3 may beregulated with respect to the-framework A. Against the fish plate-3 isheld in a'similar way a smaller fish plate 4 formed with vertical slots 4* through which protrude screws 5 fixed to the fish plate 3 and adjustable in said slots 4? whereby the vertical position of the fish plate t canbe-regulate'd with respect to the frameworkA.- 7

It will thus beseen' that'the'position of the tensioning device proper, now to be described,'can-be readily adjust-ed 'bothlength;

wise and heightwise relatively to the stationary frameworkA. j; 4 'l g The fish plate l has formed integral therewith or permanentlyfixed thereto two cheeks 6, 7 substantiallyat right angles to its plane.- The cheek 6 is formed with a cylindrically boredheadstock-8 in the bore of which is fixedly housed the lower part of a straightspin 2 maybe adjusted whereby the longitudinal I dle 9 on'the upper part of which is slidably but non-revolubly fitted a companion cylindrically bored headstock 10 the boreof which is scre'w-threaded at its upper end forthe'engagement of the correspondingly screwthreaded. tail not a circular knob or handle 12 preferably knurled or otherwise Troughshed on its rim to provide a better grip: The

knob 12 is centrally hollowed for accommodating a grub screw 9 screwed on the reduced and screw-threaded top of the spindle 9. The periphery of this grub screw 9 is notched or nicked as at 9 to provide a stationary index. The upper surface of the knob 1.9. is formed with index grooves 12 which may be angllaxrly caused to r "tel with the index notch 9, index numbers eing 1 advantageously provided as shown in Fig. 3.

Other kinds of co-operating' indices olr the screw 9 and knob 12 might of course be provided, as will be readilyunderstood.

The upper headstock has-formed integral therewith a bracket 13 having two cheeks 14,15- substantially aligned with the lower" cheeks 6i, 7. Through the: latter are jour-- nalled'the ends of a horimontaili pin 16: and

through the cheeks 14, are similarly iou'r 5 nailed ends of a horizontal pin: 17-

On each pin 16 and l'Z is-keyedor otherwise secured a: friction roller 18 and apinion- 1-9, the peripherals surfiace of saidrollers or at least of one of them being advantageously hurledror'otherwiee roughened to ensure a better grip on the lace and circumferentiallynall'ed-inathe cheeks 6 7'. The inion: 20 mm;

stantlyy meshesiu turn: with a urther pinion 22. ed on apin on which is also keyed a s at wheel 23" connected by a chaiflfl I co with. another sprocket wheel- 25*formingpartof the clutch -gar operativel-y' connected w the actuating mechanism of the loomgra'sr Willi be more fully described hereafter By'thisarrangement, the friction rollers: 18, 18- are automatically rotated in opposite directions asishovvnlby the curvilinear arrewsin Fig; 1 by the very operation-of thelooml adjustable clutch illustratedv in a Figs; 41 and15-isTinte'rposed-bekween, the usual: actuating mechanism (not shevv-n-); o the loomxand, the-chain- 2-1 for adjgistingfthfi'rotational, speed oftherollers- 18; 18 in. acc6ndaacmwith the. nature of thecrimped or puck u emd Escort-hat is heingtwoven;

The spneeket WhEBll 25 of the. dl iabloi clutch-(gear is; removably mounted; en a shed! 28 supportedvby the loom framework "and 'cavrymg a pinion 27 meshing-fwith a. smaller pinion 2s koyedona Stub-Shaft aafiaeawiac a pinion.30 meshing with a smaller pinion 31'- keyed-inturn;toa-stuhshattr32 jpurnalled in a forked! bracket-1 33 and. carrying a: ratchet W-heeL 34 with which cooperate: a retaining pawl 35- and afeeding pawl 36, the latter bein provided on the upper end of an upstan ing rod 37 fulcrumed on a fixed point of the apparatus and pivotally connected at 37a to a link 38 pivotally connected at 38a to a crank portion 39. The latter is formed 7 intermediate its ends with an elon ated slot 39? throaghwhicbprotaudos thesfiaak. of a bofi'fltal within at Mile purpase'of which is to adiustably connect it to a companion crank portion 41 jointedly connected at 42 to an eccentric of a wheel 43 connected by its shaft 44 to the mechanism actuating the lace weaving loom: This mechanism is of normal-structure and has therefore not been illustrated.

Imvieew oi the forcgbing tha operatimlof the' towing. device the abovovdncM gear willnow be i y w derstooda 7 Air. above stated, .theproblem tohe saladconsists in constantly holding weld taut the cri on puckered-side portion-G of the lace tbeother side porti'an G? (not aimedoronly slightly erimpod) oflwhioh; is usual! sti edbysomosort oi wire W i k bald in: the hemmed SBhFRgBiDf the: nonpoltiomso thatthe" warprtlmmbv in the'rorimphd portion which are, of comae, longer (say twicelonger) than the warp thnads-in the mn-crimpedportion G should: nonetheless be held as asthe latter whereby at eachv pick the. shuttle (.notshmmr. cicoaventieaal structure of the teen should always traverse the :lap of! war}; substantially at right angles theretoi and. the texture of, the I'm is-tlflasuflifomthrOughout its width;

The afieresaid problemis reaglily solved by theoperatioa of thdmnsioning device acrding invention since the crimped or puckwedside: G ofithe lace is em 'gagedbotweona the frintionrrollem 1.8, '18

whose distance maybe adjusted atw-ill by m of the index knob of handle 12.and whosef rowtienaLspeed may be regulated by the above-described clutch gear, as willbestat' ed hereafter, to cwselthe rate of feed crimped side portion Gr ofthe-lace toalwgs catch up the rateof feed od its plain e portiomG! regsmil'ess ofthe discrepancy'in of thew; respective warp: threads. It

wilk'he seemtiiat' by-thefrictional action of' tlw18 18 onthe crimpedor puckered sida'portl- 'on of thelanouflie latter isnew suilylhnldwell taut-be pas ing. between. I! tharellers r a I I If min often the case with lace of tlns cham-tereastifieningwi-m W is imbedded in the selvage of the non-crimiped side portion G, the hem thus reinforced will 13 freely passthmughthe-side notches 18! without interfering withthaproper aotion of the rollm's. V p I I By regulating the anguhrpositiou ofthe knob 12 so aslnvary the mutual positions-of its indices 12 andthe index 9* on the grub screw 9 the distance between the friction rollers will be very accurately adjusted for example to suit the thickness or nature of the lace in the course of weaving.

The adjustment of the speed of rotation of the rollers 18, 18 can be easily performed by regulating the operative length of the composite crank 39-41. To that efi'ect, it is merely necessary to loosen the nut 40 and slide the crank portion 39 outwardly or inwardly of the crank portion 41. By thus ad justing the length of the crank 3941, it is obvious that the throw of the rod 37 and pawl 36 will be varied whereby the rotational speed of the reducing gear interposed between the ratchet wheel 34 and the sprocket wheel 25-will be correspondingly adjusted in the most precise way.

Adjustment of the rotational speed of the rollers 18, 18 might also be performed by substituting a larger or smaller sprocket wheel 25 for the one used. However it will be appreciated that in the majorityof cases the adjustment of the operative length of the composite crank 3941 will be much easier.

The whole of the gear as illustrated in Figs. 4 and 5 is suitably supported by the framework of the loom, said framework not being shown as forming no part of the invention and being of conventional structure.

Numerous minor constructional details of the device might of course be changed without departing from the spiritof. the invention. Thus forinstance horizontal slots might be formed in the outer fish plate 4 and vertical slots might. be, formed in the inner fish plate 3. The shape of the roller-supporting frame might also be changed.

hat I claim is 1. A device for tensioning crimped lace of the type set forth in the course of weaving comprising, in combination, a two-part frame 1 having means for adjustably securing it to the loom framework, a pair of parallel cylindrical friction rollers ournalled in the re spective parts of the frame and adapted to grip the crimped side portion of the lace between them, an adjustable clutch gear inter posed between the usual actuating mechanism of-the loom andthe rollers,,and index operating means associatedwith said frame for accurately adjusting the distance between the rollers. I

2. A device for tensioning crimped lace of the type set forth in the course of weaving comprising,in combination, a frame'formed of two vertically aligned bored headstocks their bores, each headstock having a pair of spaced upstanding'cheeks, a pair of parallel cylindrical friction rollers journalled in the, respective pairs ofcheeks and adapted to grip the crimped side portion ofthe lace between between the usual actuating mechanism of the loom and the rollers, index operating means associated with the spindle and upper headtive pairs of cheeks and adapted to grip the crimped side portion of the lace betweenthem, an adjustable clutch gear interposed between the usual actuating mechanism of the loom and the rollers, a bored knob bearingindices and engaging the screw-threaded portion of the upper headstock, a screw bearmg an index accommodated in the bore of the knob and screwed into the adjacent end of the spindle, and means for adjustably securing the lower headstock to the loom framework, I

4. A device for tensioning crimped lace of the type set forth in the course of weaving comprising, in combination, a frame formed of two vertically aligned bored headstocks connected to each other by a spindle fixed to the lower headstock and slidably engaging the bore of the, upper headstock, said upper headstock being internally screw-threaded over a portion of its length, each headstock.

posed between the usual iactuating mecha-- nism of the 100m and therollers, a bored knob bearing indices and engaging the screwthreaded portion of the upper headstock, a grub screw bearing an index accommodated in the bore of the knob and screwed upon the adjacent end of the spindle, and a pair of fishplates having respective slots at right angles to each other, one of said fish plates being fixed to the lower headstock, said plates beingadjustably secured to each other and to the loom framework by screws engaging their slots and held therein by nuts.

In testimony whereof I afiix my signature.

GASTON FERRET.-

them, an adjustable clutch gear interposed 

